Core: Add a Directory object, with both a stub and a passthrough implementations.

This commit is contained in:
Emmanuel Gil Peyrot 2014-09-12 00:46:42 +02:00
parent 19d04f3abe
commit 33b0d1081e
6 changed files with 264 additions and 0 deletions

View File

@ -26,6 +26,8 @@ set(SRCS
file_sys/archive_sdmc.cpp file_sys/archive_sdmc.cpp
file_sys/file_romfs.cpp file_sys/file_romfs.cpp
file_sys/file_sdmc.cpp file_sys/file_sdmc.cpp
file_sys/directory_romfs.cpp
file_sys/directory_sdmc.cpp
hle/kernel/address_arbiter.cpp hle/kernel/address_arbiter.cpp
hle/kernel/archive.cpp hle/kernel/archive.cpp
hle/kernel/event.cpp hle/kernel/event.cpp
@ -84,6 +86,9 @@ set(HEADERS
file_sys/file.h file_sys/file.h
file_sys/file_romfs.h file_sys/file_romfs.h
file_sys/file_sdmc.h file_sys/file_sdmc.h
file_sys/directory.h
file_sys/directory_romfs.h
file_sys/directory_sdmc.h
hle/kernel/address_arbiter.h hle/kernel/address_arbiter.h
hle/kernel/archive.h hle/kernel/archive.h
hle/kernel/event.h hle/kernel/event.h

View File

@ -0,0 +1,53 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
// Structure of a directory entry, from http://3dbrew.org/wiki/FSDir:Read#Entry_format
const size_t FILENAME_LENGTH = 0x20C / 2;
struct Entry {
char16_t filename[FILENAME_LENGTH]; // Entry name (UTF-16, null-terminated)
char short_name[8]; // 8.3 file name ('longfilename' -> 'LONGFI~1')
char unknown1; // unknown (observed values: 0x0A, 0x70, 0xFD)
char extension[3]; // 8.3 file extension (set to spaces for directories)
char unknown2; // unknown (always 0x01)
char unknown3; // unknown (0x00 or 0x08)
char is_directory; // directory flag
char is_hidden; // hidden flag
char is_archive; // archive flag
char is_read_only; // read-only flag
u64 file_size; // file size (for files only)
};
static_assert(sizeof(Entry) == 0x228, "Directory Entry struct isn't exactly 0x228 bytes long!");
class Directory : NonCopyable {
public:
Directory() { }
virtual ~Directory() { }
/**
* List files contained in the directory
* @param count Number of entries to return at once in entries
* @param entries Buffer to read data into
* @return Number of entries listed
*/
virtual u32 Read(const u32 count, Entry* entries) = 0;
/**
* Close the directory
* @return true if the directory closed correctly
*/
virtual bool Close() const = 0;
};
} // namespace FileSys

View File

@ -0,0 +1,38 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "core/file_sys/directory_romfs.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
Directory_RomFS::Directory_RomFS() {
}
Directory_RomFS::~Directory_RomFS() {
}
/**
* List files contained in the directory
* @param count Number of entries to return at once in entries
* @param entries Buffer to read data into
* @return Number of entries listed
*/
u32 Directory_RomFS::Read(const u32 count, Entry* entries) {
return 0;
}
/**
* Close the directory
* @return true if the directory closed correctly
*/
bool Directory_RomFS::Close() const {
return false;
}
} // namespace FileSys

View File

@ -0,0 +1,37 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "core/file_sys/directory.h"
#include "core/loader/loader.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
class Directory_RomFS final : public Directory {
public:
Directory_RomFS();
~Directory_RomFS() override;
/**
* List files contained in the directory
* @param count Number of entries to return at once in entries
* @param entries Buffer to read data into
* @return Number of entries listed
*/
u32 Read(const u32 count, Entry* entries) override;
/**
* Close the directory
* @return true if the directory closed correctly
*/
bool Close() const override;
};
} // namespace FileSys

View File

@ -0,0 +1,86 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <sys/stat.h>
#include "common/common_types.h"
#include "common/file_util.h"
#include "core/file_sys/directory_sdmc.h"
#include "core/file_sys/archive_sdmc.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
Directory_SDMC::Directory_SDMC(const Archive_SDMC* archive, const std::string& path) {
// TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass
// the root directory we set while opening the archive.
// For example, opening /../../usr/bin can give the emulated program your installed programs.
std::string absolute_path = archive->GetMountPoint() + path;
entry_count = FileUtil::ScanDirectoryTree(absolute_path, entry);
current_entry = 0;
}
Directory_SDMC::~Directory_SDMC() {
Close();
}
/**
* List files contained in the directory
* @param count Number of entries to return at once in entries
* @param entries Buffer to read data into
* @return Number of entries listed
*/
u32 Directory_SDMC::Read(const u32 count, Entry* entries) {
u32 i;
for (i = 0; i < count && current_entry < entry_count; ++i) {
FileUtil::FSTEntry file = entry.children[current_entry];
std::string filename = file.virtualName;
WARN_LOG(FILESYS, "File %s: size=%d dir=%d", filename.c_str(), file.size, file.isDirectory);
Entry* entry = &entries[i];
// TODO(Link Mauve): use a proper conversion to UTF-16.
for (int j = 0; j < FILENAME_LENGTH; ++j) {
entry->filename[j] = filename[j];
if (!filename[j])
break;
}
// Split the filename into 8.3 format.
// TODO(Link Mauve): move that to common, I guess, and make it more robust to long filenames.
std::string::size_type n = filename.rfind('.');
if (n == std::string::npos) {
strncpy(entry->short_name, filename.c_str(), 8);
memset(entry->extension, '\0', 3);
} else {
strncpy(entry->short_name, filename.substr(0, n).c_str(), 8);
strncpy(entry->extension, filename.substr(n + 1).c_str(), 8);
}
entry->is_directory = file.isDirectory;
entry->file_size = file.size;
// We emulate a SD card where the archive bit has never been cleared, as it would be on
// most user SD cards.
// Some homebrews (blargSNES for instance) are known to mistakenly use the archive bit as a
// file bit.
entry->is_archive = !file.isDirectory;
++current_entry;
}
return i;
}
/**
* Close the directory
* @return true if the directory closed correctly
*/
bool Directory_SDMC::Close() const {
return true;
}
} // namespace FileSys

View File

@ -0,0 +1,45 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "common/file_util.h"
#include "core/file_sys/directory.h"
#include "core/file_sys/archive_sdmc.h"
#include "core/loader/loader.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
class Directory_SDMC final : public Directory {
public:
Directory_SDMC();
Directory_SDMC(const Archive_SDMC* archive, const std::string& path);
~Directory_SDMC() override;
/**
* List files contained in the directory
* @param count Number of entries to return at once in entries
* @param entries Buffer to read data into
* @return Number of entries listed
*/
u32 Read(const u32 count, Entry* entries) override;
/**
* Close the directory
* @return true if the directory closed correctly
*/
bool Close() const override;
private:
u32 entry_count;
u32 current_entry;
FileUtil::FSTEntry entry;
};
} // namespace FileSys